/**
 * 
 */
package com.locationhistory.net;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.Socket;
import java.net.UnknownHostException;
import java.security.KeyManagementException;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.UnrecoverableKeyException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;

import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;

import org.apache.http.HttpResponse;
import org.apache.http.HttpVersion;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.conn.ClientConnectionManager;
import org.apache.http.conn.scheme.PlainSocketFactory;
import org.apache.http.conn.scheme.Scheme;
import org.apache.http.conn.scheme.SchemeRegistry;
import org.apache.http.conn.ssl.SSLSocketFactory;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.impl.conn.tsccm.ThreadSafeClientConnManager;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;
import org.apache.http.params.HttpProtocolParams;
import org.apache.http.protocol.HTTP;

import com.locationhistory.utils.Logger;

/**
 * This class is used to download data from web service api.
 * 
 * @author LongNH
 * 
 */
public class HttpNetService {

    public static String getDataByURL(String url, String token) {
		String content 	= "";
	
		if ( token != null && !token.equalsIgnoreCase("") ) {
		    url = url + "?token=" + token;
		}
		try {
		    HttpClient client = new DefaultHttpClient();
		    HttpGet request = new HttpGet(url);
		    HttpResponse response = client.execute(request);
	
		    InputStream in = response.getEntity().getContent();
		    BufferedReader reader = new BufferedReader(new InputStreamReader(in));
		    StringBuilder str = new StringBuilder();
		    String line = null;
		    while ((line = reader.readLine()) != null) {
			str.append(line);
		    }
		    in.close();
		    content = str.toString();
		} catch (Exception e) {
		    Logger.error(e);
		}
	
		Logger.debug("URL CALLL ======== " + url);
		Logger.debug("CONTENT FORM SERVER " + content);
		return content;
    }


    /**
     * This method read data of input stream to String
     * 
     * @param inputStream
     * @return
     */
    public static String getStringByStream(InputStream inputStream) {
		String content 	= "";
	
		try {
		    BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
		    StringBuilder str = new StringBuilder();
		    String line = null;
		    while ((line = reader.readLine()) != null) {
			str.append(line);
		    }
		    content = str.toString();
		} catch (Exception e) {
		    Logger.error(e);
		}
	
		Logger.debug("CONTENT FORM SERVER " + content);
		return content;
    }


    /**
     * This method will get input stream from url
     * 
     * @param url
     * @return
     */
    public static InputStream getInputStreamByURL(String url) {
		try {
		    url = url.replace(" ", "%20");
		    HttpClient client = new DefaultHttpClient();
	
		    HttpGet request = new HttpGet(url);
		    HttpResponse response = client.execute(request);
	
		    InputStream in = response.getEntity().getContent();
	
		    return in;
		} catch (Exception e) {
		    Logger.error(e);
		    return null;
		}

    }



    /**
     * Get HttpClient with register http/https protocol.
     * 
     * @return HttpClient object
     */
    private static HttpClient getHttpClient() {
		try {
		    KeyStore trustStore = KeyStore.getInstance(KeyStore.getDefaultType());
		    trustStore.load(null, null);
	
		    SSLSocketFactory sf = new SSLSocketFactoryCustom(trustStore);
		    sf.setHostnameVerifier(SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);
	
		    HttpParams params = new BasicHttpParams();
		    HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);
		    HttpProtocolParams.setContentCharset(params, HTTP.UTF_8);
		    HttpConnectionParams.setConnectionTimeout(params, 30000);
		    HttpConnectionParams.setSoTimeout(params, 30000);
	
		    SchemeRegistry registry = new SchemeRegistry();
		    registry.register(new Scheme("http", PlainSocketFactory.getSocketFactory(), 80));
		    registry.register(new Scheme("https", sf, 443));
	
		    ClientConnectionManager ccm = new ThreadSafeClientConnManager(params, registry);
	
		    return new DefaultHttpClient(ccm, params);
		} catch (Exception e) {
		    Logger.error(e);
		    return new DefaultHttpClient();
		}
    }

    /**
     * This class accepts the KeyStore and validate an SSL certificate
     */
    private static class SSLSocketFactoryCustom extends SSLSocketFactory {
		SSLContext sslContext = SSLContext.getInstance("TLS");
	
		public SSLSocketFactoryCustom(KeyStore truststore) throws NoSuchAlgorithmException, KeyManagementException, KeyStoreException, UnrecoverableKeyException {
		    super(truststore);
	
		    TrustManager tm = new X509TrustManager() {
			public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException {
			}
	
			public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException {
			}
	
			public X509Certificate[] getAcceptedIssuers() {
			    return null;
			}
	    };

	    sslContext.init(null, new TrustManager[] { tm }, null);
	}

	@Override
	public Socket createSocket(Socket socket, String host, int port, boolean autoClose) throws IOException, UnknownHostException {
	    return sslContext.getSocketFactory().createSocket(socket, host, port, autoClose);
	}

	@Override
	public Socket createSocket() throws IOException {
	    return sslContext.getSocketFactory().createSocket();
	}
    }

}
